Geometry and Trigonometry

Volumes, perimeters, angles, identities, triangles, sin, cos, tan.

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  1. hshi2021

    Calculation Help

    hshi2021, May 26, 2021
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    256
    hshi2021
    May 26, 2021
  2. melman

    Math help

    melman, Apr 20, 2020
    Replies:
    1
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    857
    hendry1
    Apr 21, 2020
  3. cpwang

    How To Define A Flat Plane: The fruit of reinventing wheels when studying Euclidean geometry

    cpwang, Jan 2, 2019
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    1,136
    cpwang
    Jan 2, 2019
  4. redapplesonly

    Using arctan to find an angle... in an unusual coordinate system...

    redapplesonly, Jan 12, 2018
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    1,026
    redapplesonly
    Jan 12, 2018
  5. Xarzu

    A Simple Trigonometry question about Cosines

    Xarzu, Sep 26, 2017
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    888
    Xarzu
    Sep 26, 2017
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